Read Sharp AR-C270 (serv.man7) Service Manual online
b.PCU PWB
Mode
Operates.
NOTE
Sleep
Does not operate.
Preheat
Refer to "d. Signals controlled by
the PCU PWB in the pre-heat
mode".
the PCU PWB in the pre-heat
mode".
Normal
Operates.
c.ICU PWB
Mode
Operates.
NOTE
Sleep
Does not operate.
Low power
Normal
Operates.
(Signals controlled by the PCU PWB in the pre-heat mode)
Section
Signal name
Content
Operation in the
pre-heat mode
Manual
paper feed
paper feed
MPWS
Manual feed width
detection
detection
Does not
operate.
operate.
MPLD1
Manual feed
length detection
length detection
MPLD2
Manual feed
length detection
length detection
MTOP1
Manual feed tray
pull-out detection
pull-out detection
MTOP2
Manual feed tray
pull-out detection
pull-out detection
MPED
Manual feed
paper empty
detection
paper empty
detection
Paper feed
tray
tray
C
∗
SS1
Paper size
detection
detection
Does not
operate.
operate.
C
∗
SS2
Paper size
detection
detection
C
∗
SS3
Paper size
detection
detection
C
∗
SS4
Paper size
detection
detection
PED
∗
Paper empty
detection
detection
LUD
∗
Paper upper limit
detection
detection
C
∗
PD1
Paper remaining
quantity detection
1
quantity detection
1
LUM_ENB
∗
Paper tray lift-up
motor
motor
Paper
transport
transport
PFD
∗
Cassette paper
feed detection
feed detection
Does not
operate.
operate.
PPD1
Paper detection in
front of RR roller
front of RR roller
POD
Machine paper
exit detection
exit detection
PODF
Finisher paper exit
detection
detection
PFM
Paper feed motor
TRC
Transport clutch
MPFS
Manual paper
feed solenoid
feed solenoid
MPFC
Manual paper
feed clutch
feed clutch
CPFS
∗
Cassette paper
feed solenoid
feed solenoid
CPFC
∗
Cassette paper
feed clutch
feed clutch
RRM_START
RR motor
Section
Signal name
Content
Operation in the
pre-heat mode
Developing
PRD_AN?
Toner
concentration
detection
concentration
detection
Does not
operate.
operate.
Fusing
HLPR
HL power relay
ON
Waste
toner
toner
TBBOX
Waste toner bottle
installation
detection
installation
detection
Does not
operate.
operate.
TFD
Waste toner full
detection
detection
Image
process
process
DMENB
All OPC drum
drive motor
drive motor
Does not
operate.
operate.
DVKM
Developing motor
(Black)
(Black)
DVCM
Developing motor
(Color)
(Color)
HPCH
Toner hopper
installation
detection
installation
detection
PRD_ANRTH
Image process
temperature
detection
temperature
detection
Coin
vendor
(Japan
only)
vendor
(Japan
only)
CV_COPY
B/W copy allow
signal
signal
❍
(No Money
insertion
insertion
→
Detection ;
pre-heat mode
canceled)
pre-heat mode
canceled)
CV_CLCOPY
Color copy allow
signal
signal
CV_COUNT
Count signal
Does not
operate.
operate.
CV_START
Copy start signal
CV_COLOR
Color signal
CV_SIZE0
Size signal 0
CV_SIZE1
Size signal 1
CV_SIZE2
Size signal 2
CV_SIZE3
Size signal 3
Scanner
(reading)
(reading)
MHPS
Mirror home
position detection
position detection
Does not
operate.
operate.
SMENB
Scanner (writing)
motor
motor
Copy lamp
CL
Scanner lamp
Does not
operate.
operate.
Fan
CFM
Scanner (reading)
cooling fan
cooling fan
Does not
operate.
operate.
VFPWM
Fusing
exhaust/cooling
fan
exhaust/cooling
fan
Operates. (Only
the fusing
exhaust fan is
operable.)
the fusing
exhaust fan is
operable.)
LSUPWM
LSU cooling fan
(LSUFM)
(LSUFM)
Does not
operate.
operate.
OZFM
Ozone exhaust
fan
fan
Others
DSWF
Front door open
detection
detection
Does not
operate.
operate.
DDSW
Paper exit door
open detection
open detection
RDSWU
Paper fed upper
door open
detection
door open
detection
RDSWD
Paper feed lower
door open
detection
door open
detection
PSPR
Main power relay
OFF
MCLKA
Paper tray lift
motor/Toner motor
motor/Toner motor
Does not
operate.
operate.
MCLKB
DHPR
DHPR
Dehumidifier
heater power relay
heater power relay
Operates.
6 – 6
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